To fart whilst in the throes of love making. Usually results in stoppage of play an assessment of a cold shower/weather delay, can enhance experience if played correctly. Named after Austrian fart-music pioneer Franz Lebow, who let one go while nailing his wife. pronounced however the fuck you want

Gary M: I was having sex with my wife and I right as I was gonna make her squeal I lebowed and i woke the dog
Gary S: Lebowing is the worst